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- W1992658250 abstract "This study evaluates the prognostic value of uterine Doppler performed on the day of embryo transfer in an in vitro fertilization program. Patients were divided into two groups according to the type of ovarian stimulation. The Doppler investigation was carried out using vaginal sonography. The pulsatility index was used to evaluate the uterine blood flow pattern. The hormonal profile (estradiol, luteinizing hormone (LH) and progesterone) was correlated to Doppler results and to the pregnancy rate. The comparison between patients treated with analogs and those who were not shows a significant difference in their hormonal profile. In the first group, we found a higher estradiol and progesterone serum concentration. The LH level and the pulsatility index were statistically lower. The endometrium was thicker in patients treated with gonadotropin releasing hormone agonists. In the group of patients treated with analogs, the statistical analysis showed no significant difference in the mean pulsatility index value in women who achieved a pregnancy and in those who failed. In the group of patients who received no agonists, only one variable was significantly different: the mean age was lower in women who became pregnant. We observed no ongoing pregnancy in women who had a pulsatility index value higher than two standard deviations (pulsatility index = 3.55). We therefore suggest the use of this value as a threshold. Thus, if a patient has a high uterine artery impedance, cryopreservation should be used and embryo transfer should be postponed to a subsequent cycle, or embryo transfer delayed for a few days using co-culture. This study clearly shows the impact of hormonal response on the Doppler value and on the pregnancy rate. However, the use of a threshold value for uterine artery pulsatility index might have a clinical impact in the future management of patients attending an in vitro fertilization program. Copyright © 1993 International Society of Ultrasound in Obstetrics and Gynecology" @default.
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- W1992658250 date "1993-09-01" @default.
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- W1992658250 title "Predictive value of transvaginal uterine Doppler assessment in an <i>in vitro</i> fertilization program" @default.
- W1992658250 doi "https://doi.org/10.1046/j.1469-0705.1993.03050350.x" @default.
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